package com.ypj.community.event;

import com.alibaba.fastjson.JSONObject;
import com.ypj.community.domain.DiscussPost;
import com.ypj.community.domain.Event;
import com.ypj.community.domain.Message;
import com.ypj.community.service.DiscussPostService;
import com.ypj.community.service.ElasticsearchService;
import com.ypj.community.service.MessageService;
import com.ypj.community.util.CommunityConstant;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Component
public class EventConsumer implements CommunityConstant {

    private static final Logger LOGGER= LoggerFactory.getLogger(EventConsumer.class);

    @Autowired
    private MessageService messageService;

    @Autowired
    private DiscussPostService discussPostService;

    @Autowired
    private ElasticsearchService elasticsearchService;

    @Value("${wk.image.storage}")
    private String wkImageStorage;
    @Value("${wk.image.command}")
    private String wkImageCommand;

    @KafkaListener(topics = {TOPIC_COMMENT,TOPIC_FOLLOW,TOPIC_LIKE})
    public void handleCommentMessage(ConsumerRecord record){
        if (record==null||record.value()==null){
            LOGGER.error("消息内容为空！");
            return ;
        }
        Event event= JSONObject.parseObject(record.value().toString(),Event.class);
        if (event==null){
            LOGGER.error("消息格式错误！");
            return;
        }
        //发送站内通知
        Message message=new Message();
        message.setFromId(SYSTEM_USER_ID);
        message.setToId(event.getEntityUserId());
        message.setConversationId(event.getTopic());
        message.setCreateTime(new Date());

        Map<String,Object> content=new HashMap<>();
        content.put("userId",event.getUserId());
        content.put("entityType",event.getEntityType());
        content.put("entityId",event.getEntityId());

        if (!event.getData().isEmpty()){
            for (Map.Entry<String,Object> entry:event.getData().entrySet()){
                content.put(entry.getKey(),entry.getValue());
            }
        }
        message.setContent(JSONObject.toJSONString(content));
        messageService.addMessage(message);
    }
    //消费发帖事件
    @KafkaListener(topics ={TOPIC_PUBLISH})
    public void handlePublishMessage(ConsumerRecord record){
        if (record==null||record.value()==null){
            LOGGER.error("消息的内容为空！");
            return;
        }
        Event event=JSONObject.parseObject(record.value().toString(),Event.class);
        if (event==null){
            LOGGER.error("消息格式错误!");
            return ;
        }
        DiscussPost discussPost=discussPostService.findDiscussPostById(event.getEntityId());
        elasticsearchService.saveDiscussPost(discussPost);
    }
    //消费删帖事件
    @KafkaListener(topics ={TOPIC_DELETE})
    public void handleDeleteMessage(ConsumerRecord record){
        if (record==null||record.value()==null){
            LOGGER.error("消息的内容为空！");
            return;
        }
        Event event=JSONObject.parseObject(record.value().toString(),Event.class);
        if (event==null){
            LOGGER.error("消息格式错误!");
            return ;
        }

        elasticsearchService.deleteDiscussPost(event.getEntityId());
    }
    //消费分享事件
    @KafkaListener(topics = {TOPIC_SHARE})
    public void handleShareMessage(ConsumerRecord record){
        if (record==null||record.value()==null){
            LOGGER.error("消息的内容为空！");
            return;
        }
        Event event=JSONObject.parseObject(record.value().toString(),Event.class);
        if (event==null){
            LOGGER.error("消息格式错误!");
            return ;
        }
        String htmUrl=(String) event.getData().get("htmlUrl");
        String fileName=(String) event.getData().get("fileName");
        String suffix=(String) event.getData().get("suffix");
        String cmd=wkImageCommand+" --quality 75 "
                +htmUrl+" "+wkImageStorage+"/"+fileName+suffix;
        try {
            Runtime.getRuntime().exec(cmd);
            LOGGER.info("生成长图成功："+cmd);
        } catch (IOException e) {
            LOGGER.error("生成长图失败："+e.getMessage());
        }
    }
}
